When you pull a chambered but unfired cartridge back out, do you see rifling marks on the bullets? You can always seat them deeper and crimp over the front of the bearing surface, though that won't help you with push-in during feeding from a magazine and you will want to lower the powder charge a little. For loading singly, though, the crimp may be unnecessary, depending on the powder choice. These bullets may have been designed for a longer throat or a different cartridge.
If, instead of the bullet getting marked, marks are on the case neck (use a Magic Marker to color the neck so you can see scuffing easily), then the bullets need to be sized down a little.